煤炭地下气化温控爆破渗流燃烧控制参数及变化规律研究

Underground Coal Gasification, one kind of advanced cleaning coal technology that accords with sustainable development strategy, has received the universal attention and research at home and abroad. According to the hot potato that it is very difficult to go on underground gasification effectively in inclined, slightly inclined or nearly horizontal coal seam, this project has studied the theory and method on temperature-control blasting seepage-flow combustion in Underground Coal Gasi- fication; The thermal stability of high-temperature resistant explosive is studied; The characteristic parameters and bursting parameters of temperature-control loose- ness blasting and internal relations among them during the course of Underground Coal Gasification are put forward and discussed; It establishes similarity rule for temper- ature-control blasting under nonisothermal condition, carries on the analysis of ther- mal dynamic action and builds up predictive model on thermal explosion nonlinear critical temperature in the process of Underground Coal Gasification, and also sets up three dimensional nonlinear dynamic temperature field, material migration mathema- tical model and quantitative relations among every nonsteady parameter in Under- ground Coal Gasification. It also studies the permeability of gasified furnace, the moving law of flame working face, the influence of friable state of coal seam on gas compositions, heating value and gas production stability and changing law. The researches indicate that the heating value of air gas and water gas increases 30 percent and 23 percent approximately more than that of traditional methods respectively. It will provide theoretical guide and scitific basis for retrieving enormous coal resource that is abandoned in inclined, slightly inclined or nearly horizontal coal seam and help to bring about the formation and development of industrialization of Underground Coal Gasificatoin.

研究温控松动爆破的特征参数、爆破参数及内在关联；确立非等温条件下相似准则关系；建立煤炭地下气化动态温度场及物质运移数学模型及各非定常参数之间的定量关系；研究气化炉体的渗透性和燃烧状况。为回收在缓倾斜或近水平煤层中所遗弃的大量煤炭资源，提供理论指导和科学依据，促成煤炭地下气化产业化的形成和发展。